PROGRAM

QN Seminar David Goldhaber-Gordon (Stanford University): 'Making and using beams of electrons in graphene'

Date:

Time:

14:00 hrs

Location:

Lecture Room G, Lorentzweg 1, Delft

 

As soon as graphene was discovered, researchers began dreaming about the remarkable electron optics they might expect, including Klein tunnelling and sign change in index of refraction going from n to p type regions. But until recently these remained mostly a dream, since electronic mean free paths were well below a micron. Some clever experiments tested ballistic transport on very short length scales. But with advances in the past few years, mean free paths of tens of microns are now consistently achievable, opening up many new possibilities. I will tell about our recent progress on making narrow collimated beams, achieving mirror like reflection at edges, identifying scattering mechanisms that limit mean free path, and using ballistic motion to probe band structure of super lattices in exquisite detail.

Events

18 - 23 March 2019

NanoFront Winter Retreat 2019link

2 - 3 April 2019

BioSB2019: Register now!link

6 - 7 June 2019

Casimir Open Days 2019link

24 - 28 June 2019

BioBusiness Summer Schoollink